Evidence for ammonium-bearing minerals on Ceres

Trude V.V. King, R. N. Clark, W. M. Calvin, D. M. Sherman, R. H. Brown

Research output: Contribution to journalArticlepeer-review

127 Scopus citations


Spectra obtained from recent telescopic observation of 1-Ceres and laboratory measurements and theoretical calculations of three component mixtures of Ceres analog material suggest that an ammoniated phyllosilicate is present on the surface of the asteroid, rather than H2O frost as had been previously reported. The presence of an ammoniated phyllosilicate, most likely ammoniated saponite, on the surface of Ceres implies that secondary temperatures could not have exceeded 400 kelvin.

Original languageEnglish (US)
Pages (from-to)1551-1553
Number of pages3
Issue number5051
StatePublished - 1992

ASJC Scopus subject areas

  • General


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